Un ballo in maschera, Act I, scene 1
Act 1, scene 1: a hall in the royal palace
Mus. Arc. 3.1
Not identified and Perry, J. Warren, “Un ballo in maschera, Act I, scene 1,” Digital Collections - University at Buffalo Libraries, accessed July 31, 2021, https://digital.lib.buffalo.edu/items/show/7946.